Malware in alder_morrgan
The npm package alder_morrgan was found to contain malware that grants full system compromise to attackers. Any computer with this package installed or running should be considered fully compromised.
- Disclosed
- Last updated
- Blast radius
- Any system with the package installed or running
- Ecosystems
- Attack vectors
- Affected entities
- alder_morrgan
The npm package alder_morrgan has been identified as containing malware. According to the GitHub Advisory (GHSA-j23f-jg9h-gjmc), any computer that has this package installed or running should be considered fully compromised.\n\nThe advisory recommends that all secrets and keys stored on affected computers be rotated immediately from a different, uncompromised system. While the package should be removed, there is no guarantee that removal will eliminate all malicious software that may have been installed as a result of the initial compromise, given that the attacker may have gained full control of the system.\n\nUsers should treat any system that has run this package as potentially containing persistent malware and take appropriate incident response measures.
Indicators of compromise
- Packages
- alder_morrgan
Remediation
- Immediately isolate any computer that has installed or run alder_morrgan from the network
- Rotate all secrets, API keys, credentials, and signing keys from a different, uncompromised computer
- Remove the alder_morrgan package from all systems
- Perform a full forensic analysis and malware scan on affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if the compromise is confirmed to be persistent
Sources
- GitHub Advisory GHSA-j23f-jg9h-gjmc · GitHub Advisory Database
Cite this entry
"Malware in alder_morrgan." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 3, 2026; last updated July 3, 2026. https://supplychainattack.org/incident/malware-in-alder-morrgan-e1alin
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